What is the term for the movement of pesticides into plants?

The term that describes the movement of pesticides into plants is absorption. This process involves the penetration of pesticide molecules through the plant's cuticle and cell membranes, enabling the substances to enter the plant tissues. Once inside, pesticides can be distributed to various parts of the plant, effectively providing protection against pests and diseases.

While other terms, such as translocation and uptake, relate to how substances move within plants, absorption specifically refers to the initial phase where the pesticide enters the plant. Translocation, for instance, refers to the distribution of these substances once they are inside the plant, typically through the vascular system. Uptake is a broader term that can encompass absorption but is less specific. Thus, absorption is the most accurate term to indicate the initial movement of pesticides into plants.